| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc --> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>BaseLoadBalancer (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| <script type="text/javascript" src="../../../../../../script.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="BaseLoadBalancer (Apache HBase 3.0.0-alpha-2-SNAPSHOT API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":10,"i1":6,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":10,"i20":10,"i21":10,"i22":10,"i23":10,"i24":10,"i25":10,"i26":10,"i27":10}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"],8:["t4","Concrete Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a name="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/BaseLoadBalancer.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CandidateGenerator.html" title="class in org.apache.hadoop.hbase.master.balancer"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" target="_top">Frames</a></li> |
| <li><a href="BaseLoadBalancer.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.hadoop.hbase.master.balancer</div> |
| <h2 title="Class BaseLoadBalancer" class="title">Class BaseLoadBalancer</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/conf/ConfigurationObserver.html" title="interface in org.apache.hadoop.hbase.conf">ConfigurationObserver</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a>, <a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html" title="interface in org.apache.hadoop.hbase">Stoppable</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodeLoadBalancer.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodeLoadBalancer</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/SimpleLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">SimpleLoadBalancer</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Private |
| public abstract class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.61">BaseLoadBalancer</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></pre> |
| <div class="block">The base class for load balancers. It provides the the functions used to by |
| <code>AssignmentManager</code> to assign regions in the edge cases. It doesn't provide an |
| implementation of the actual balancing algorithm. |
| <p/> |
| Since 3.0.0, all the balancers will be wrapped inside a <code>RSGroupBasedLoadBalancer</code>, it will |
| be in charge of the synchronization of balancing and configuration changing, so we do not need to |
| synchronized by ourselves.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
| <!-- --> |
| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BALANCER_DECISION_BUFFER_ENABLED">BALANCER_DECISION_BUFFER_ENABLED</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BALANCER_REJECTION_BUFFER_ENABLED">BALANCER_REJECTION_BUFFER_ENABLED</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/ClusterMetrics.html" title="interface in org.apache.hadoop.hbase">ClusterMetrics</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#clusterStatus">clusterStatus</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#DEFAULT_BALANCER_DECISION_BUFFER_ENABLED">DEFAULT_BALANCER_DECISION_BUFFER_ENABLED</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED">DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#isByTable">isByTable</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#masterServerName">masterServerName</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/MetricsBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">MetricsBalancer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#metricsBalancer">metricsBalancer</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#MIN_SERVER_BALANCE">MIN_SERVER_BALANCE</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/ClusterInfoProvider.html" title="interface in org.apache.hadoop.hbase.master.balancer">ClusterInfoProvider</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#provider">provider</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#rackManager">rackManager</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionFinder">regionFinder</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#slop">slop</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#stopped">stopped</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#useRegionFinder">useRegionFinder</a></span></code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.hbase.master.LoadBalancer"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from interface org.apache.hadoop.hbase.master.<a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#BOGUS_SERVER_NAME">BOGUS_SERVER_NAME</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#HBASE_RSGROUP_LOADBALANCER_CLASS">HBASE_RSGROUP_LOADBALANCER_CLASS</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colLast" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BaseLoadBalancer--">BaseLoadBalancer</a></span>()</code> |
| <div class="block">The constructor that uses the basic MetricsBalancer</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BaseLoadBalancer-org.apache.hadoop.hbase.master.balancer.MetricsBalancer-">BaseLoadBalancer</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/MetricsBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">MetricsBalancer</a> metricsBalancer)</code> |
| <div class="block">This Constructor accepts an instance of MetricsBalancer, |
| which will be used instead of creating a new one</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceCluster-java.util.Map-">balanceCluster</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> loadOfAllTable)</code> |
| <div class="block">Perform the major balance operation for cluster, will invoke |
| <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"><code>balanceTable(TableName, Map)</code></a> to do actual balance.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-">balanceTable</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> tableName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> loadOfOneTable)</code> |
| <div class="block">Perform the major balance operation for table, all sub classes should override this method.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#createCluster-java.util.List-java.util.Collection-">createCluster</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#createRegionLocationFinder-org.apache.hadoop.conf.Configuration-">createRegionLocationFinder</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#findIdleServers-java.util.List-">findIdleServers</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected org.apache.hadoop.conf.Configuration</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#getConf--">getConf</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#getDefaultSlop--">getDefaultSlop</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#getRegionAssignmentsByServer-java.util.Collection-">getRegionAssignmentsByServer</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#idleRegionServerExist-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">idleRegionServerExist</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> c)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#initialize--">initialize</a></span>()</code> |
| <div class="block">Initialize the load balancer.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#isStopped--">isStopped</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#loadConf-org.apache.hadoop.conf.Configuration-">loadConf</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>protected float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#normalizeSlop-float-">normalizeSlop</a></span>(float slop)</code> </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#onConfigurationChange-org.apache.hadoop.conf.Configuration-">onConfigurationChange</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Notification that config has changed</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#postMasterStartupInitialize--">postMasterStartupInitialize</a></span>()</code> |
| <div class="block">If balancer needs to do initialization after Master has started up, lets do that here.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#preBalanceCluster-java.util.Map-">preBalanceCluster</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> loadOfAllTable)</code> |
| <div class="block">Called before actually executing balanceCluster.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#randomAssignment-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Used to assign a single region to a random server.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Used to assign a single region to a random server.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionOffline-org.apache.hadoop.hbase.client.RegionInfo-">regionOffline</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code> |
| <div class="block">Marks the region as offline at balancer.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionOnline-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">regionOnline</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> sn)</code> |
| <div class="block">Marks the region as online at balancer.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#retainAssignment-java.util.Map-java.util.List-">retainAssignment</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Generates a bulk assignment startup plan, attempting to reuse the existing |
| assignment information from META, but adjusting for the specified list of |
| available/online servers available for assignment.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#roundRobinAssignment-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-java.util.List-java.util.List-java.util.Map-">roundRobinAssignment</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignments)</code> |
| <div class="block">Round robin a list of regions to a list of servers</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#roundRobinAssignment-java.util.List-java.util.List-">roundRobinAssignment</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Generates a bulk assignment plan to be used on cluster startup using a |
| simple round-robin assignment.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#setClusterInfoProvider-org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider-">setClusterInfoProvider</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/ClusterInfoProvider.html" title="interface in org.apache.hadoop.hbase.master.balancer">ClusterInfoProvider</a> provider)</code> |
| <div class="block">Set the cluster info provider.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#stop-java.lang.String-">stop</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> why)</code> |
| <div class="block">Stop this service.</div> |
| </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#toEnsumbleTableLoad-java.util.Map-">toEnsumbleTableLoad</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> LoadOfAllTable)</code> </td> |
| </tr> |
| <tr id="i26" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#updateBalancerStatus-boolean-">updateBalancerStatus</a></span>(boolean status)</code> |
| <div class="block">Updates the balancer status tag reported to JMX</div> |
| </td> |
| </tr> |
| <tr id="i27" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#updateClusterMetrics-org.apache.hadoop.hbase.ClusterMetrics-">updateClusterMetrics</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/ClusterMetrics.html" title="interface in org.apache.hadoop.hbase">ClusterMetrics</a> st)</code> |
| <div class="block">Set the current cluster status.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
| <!-- --> |
| </a> |
| <h3>Field Detail</h3> |
| <a name="LOG"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.63">LOG</a></pre> |
| </li> |
| </ul> |
| <a name="BALANCER_DECISION_BUFFER_ENABLED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>BALANCER_DECISION_BUFFER_ENABLED</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.65">BALANCER_DECISION_BUFFER_ENABLED</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.BALANCER_DECISION_BUFFER_ENABLED">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="DEFAULT_BALANCER_DECISION_BUFFER_ENABLED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>DEFAULT_BALANCER_DECISION_BUFFER_ENABLED</h4> |
| <pre>public static final boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.67">DEFAULT_BALANCER_DECISION_BUFFER_ENABLED</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.DEFAULT_BALANCER_DECISION_BUFFER_ENABLED">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="BALANCER_REJECTION_BUFFER_ENABLED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>BALANCER_REJECTION_BUFFER_ENABLED</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.69">BALANCER_REJECTION_BUFFER_ENABLED</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.BALANCER_REJECTION_BUFFER_ENABLED">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED</h4> |
| <pre>public static final boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.71">DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MIN_SERVER_BALANCE"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>MIN_SERVER_BALANCE</h4> |
| <pre>protected static final int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.73">MIN_SERVER_BALANCE</a></pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.MIN_SERVER_BALANCE">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="stopped"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stopped</h4> |
| <pre>private volatile boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.74">stopped</a></pre> |
| </li> |
| </ul> |
| <a name="regionFinder"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>regionFinder</h4> |
| <pre>protected volatile <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.76">regionFinder</a></pre> |
| </li> |
| </ul> |
| <a name="useRegionFinder"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>useRegionFinder</h4> |
| <pre>protected boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.77">useRegionFinder</a></pre> |
| </li> |
| </ul> |
| <a name="isByTable"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isByTable</h4> |
| <pre>protected boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.78">isByTable</a></pre> |
| </li> |
| </ul> |
| <a name="slop"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>slop</h4> |
| <pre>protected float <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.81">slop</a></pre> |
| </li> |
| </ul> |
| <a name="rackManager"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>rackManager</h4> |
| <pre>protected volatile <a href="../../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.82">rackManager</a></pre> |
| </li> |
| </ul> |
| <a name="metricsBalancer"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>metricsBalancer</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/MetricsBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">MetricsBalancer</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.83">metricsBalancer</a></pre> |
| </li> |
| </ul> |
| <a name="clusterStatus"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>clusterStatus</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/ClusterMetrics.html" title="interface in org.apache.hadoop.hbase">ClusterMetrics</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.84">clusterStatus</a></pre> |
| </li> |
| </ul> |
| <a name="masterServerName"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>masterServerName</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.85">masterServerName</a></pre> |
| </li> |
| </ul> |
| <a name="provider"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>provider</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/ClusterInfoProvider.html" title="interface in org.apache.hadoop.hbase.master.balancer">ClusterInfoProvider</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.86">provider</a></pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="BaseLoadBalancer--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>BaseLoadBalancer</h4> |
| <pre>protected <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.91">BaseLoadBalancer</a>()</pre> |
| <div class="block">The constructor that uses the basic MetricsBalancer</div> |
| </li> |
| </ul> |
| <a name="BaseLoadBalancer-org.apache.hadoop.hbase.master.balancer.MetricsBalancer-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>BaseLoadBalancer</h4> |
| <pre>protected <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.99">BaseLoadBalancer</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/MetricsBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">MetricsBalancer</a> metricsBalancer)</pre> |
| <div class="block">This Constructor accepts an instance of MetricsBalancer, |
| which will be used instead of creating a new one</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getConf--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getConf</h4> |
| <pre>protected final org.apache.hadoop.conf.Configuration <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.103">getConf</a>()</pre> |
| </li> |
| </ul> |
| <a name="updateClusterMetrics-org.apache.hadoop.hbase.ClusterMetrics-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>updateClusterMetrics</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.108">updateClusterMetrics</a>(<a href="../../../../../../org/apache/hadoop/hbase/ClusterMetrics.html" title="interface in org.apache.hadoop.hbase">ClusterMetrics</a> st)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#updateClusterMetrics-org.apache.hadoop.hbase.ClusterMetrics-">LoadBalancer</a></code></span></div> |
| <div class="block">Set the current cluster status. This allows a LoadBalancer to map host name to a server</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#updateClusterMetrics-org.apache.hadoop.hbase.ClusterMetrics-">updateClusterMetrics</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setClusterInfoProvider-org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setClusterInfoProvider</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.117">setClusterInfoProvider</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/ClusterInfoProvider.html" title="interface in org.apache.hadoop.hbase.master.balancer">ClusterInfoProvider</a> provider)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#setClusterInfoProvider-org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider-">LoadBalancer</a></code></span></div> |
| <div class="block">Set the cluster info provider. Usually it is just a wrapper of master.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#setClusterInfoProvider-org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider-">setClusterInfoProvider</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="postMasterStartupInitialize--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>postMasterStartupInitialize</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.122">postMasterStartupInitialize</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#postMasterStartupInitialize--">LoadBalancer</a></code></span></div> |
| <div class="block">If balancer needs to do initialization after Master has started up, lets do that here.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#postMasterStartupInitialize--">postMasterStartupInitialize</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="idleRegionServerExist-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>idleRegionServerExist</h4> |
| <pre>protected final boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.128">idleRegionServerExist</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> c)</pre> |
| </li> |
| </ul> |
| <a name="roundRobinAssignment-java.util.List-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>roundRobinAssignment</h4> |
| <pre>@NonNull |
| public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.161">roundRobinAssignment</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Generates a bulk assignment plan to be used on cluster startup using a |
| simple round-robin assignment. |
| <p/> |
| Takes a list of all the regions and all the servers in the cluster and |
| returns a map of each server to the regions that it should be assigned. |
| <p/> |
| Currently implemented as a round-robin assignment. Same invariant as load |
| balancing, all servers holding floor(avg) or ceiling(avg). |
| |
| TODO: Use block locations from HDFS to place regions with their blocks</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#roundRobinAssignment-java.util.List-java.util.List-">roundRobinAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - all regions</dd> |
| <dd><code>servers</code> - all servers</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>map of server to the regions it should take, or emptyMap if no |
| assignment is possible (ie. no servers)</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createCluster-java.util.List-java.util.Collection-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>createCluster</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.185">createCluster</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="findIdleServers-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>findIdleServers</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.217">findIdleServers</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</pre> |
| </li> |
| </ul> |
| <a name="randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>randomAssignment</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.226">randomAssignment</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Used to assign a single region to a random server.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regionInfo</code> - Region for which this selection is being done.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="retainAssignment-java.util.Map-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>retainAssignment</h4> |
| <pre>@NonNull |
| public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.268">retainAssignment</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Generates a bulk assignment startup plan, attempting to reuse the existing |
| assignment information from META, but adjusting for the specified list of |
| available/online servers available for assignment. |
| <p> |
| Takes a map of all regions to their existing assignment from META. Also |
| takes a list of online servers for regions to be assigned to. Attempts to |
| retain all assignment, so in some instances initial assignment will not be |
| completely balanced. |
| <p> |
| Any leftover regions without an existing server to be assigned to will be |
| assigned randomly to available servers.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#retainAssignment-java.util.Map-java.util.List-">retainAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - regions and existing assignment from meta</dd> |
| <dd><code>servers</code> - available servers</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>map of servers and regions to be assigned to them, or emptyMap if no |
| assignment is possible (ie. no servers)</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="normalizeSlop-float-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>normalizeSlop</h4> |
| <pre>protected final float <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.375">normalizeSlop</a>(float slop)</pre> |
| </li> |
| </ul> |
| <a name="getDefaultSlop--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getDefaultSlop</h4> |
| <pre>protected float <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.385">getDefaultSlop</a>()</pre> |
| </li> |
| </ul> |
| <a name="createRegionLocationFinder-org.apache.hadoop.conf.Configuration-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>createRegionLocationFinder</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.389">createRegionLocationFinder</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| </li> |
| </ul> |
| <a name="loadConf-org.apache.hadoop.conf.Configuration-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>loadConf</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.396">loadConf</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| </li> |
| </ul> |
| <a name="initialize--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>initialize</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.411">initialize</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#initialize--">LoadBalancer</a></code></span></div> |
| <div class="block">Initialize the load balancer. Must be called after setters.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#initialize--">initialize</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="regionOnline-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>regionOnline</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.416">regionOnline</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> sn)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#regionOnline-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">LoadBalancer</a></code></span></div> |
| <div class="block">Marks the region as online at balancer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#regionOnline-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">regionOnline</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="regionOffline-org.apache.hadoop.hbase.client.RegionInfo-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>regionOffline</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.420">regionOffline</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#regionOffline-org.apache.hadoop.hbase.client.RegionInfo-">LoadBalancer</a></code></span></div> |
| <div class="block">Marks the region as offline at balancer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#regionOffline-org.apache.hadoop.hbase.client.RegionInfo-">regionOffline</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isStopped--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isStopped</h4> |
| <pre>public boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.424">isStopped</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html#isStopped--">isStopped</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html" title="interface in org.apache.hadoop.hbase">Stoppable</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True if <a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html#stop-java.lang.String-"><code>Stoppable.stop(String)</code></a> has been closed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="stop-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stop</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.429">stop</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> why)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html#stop-java.lang.String-">Stoppable</a></code></span></div> |
| <div class="block">Stop this service. |
| Implementers should favor logging errors over throwing RuntimeExceptions.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html#stop-java.lang.String-">stop</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html" title="interface in org.apache.hadoop.hbase">Stoppable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>why</code> - Why we're stopping.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="updateBalancerStatus-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>updateBalancerStatus</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.438">updateBalancerStatus</a>(boolean status)</pre> |
| <div class="block">Updates the balancer status tag reported to JMX</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#updateBalancerStatus-boolean-">updateBalancerStatus</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="randomAssignment-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>randomAssignment</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.445">randomAssignment</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</pre> |
| <div class="block">Used to assign a single region to a random server.</div> |
| </li> |
| </ul> |
| <a name="roundRobinAssignment-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-java.util.List-java.util.List-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>roundRobinAssignment</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.482">roundRobinAssignment</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignments)</pre> |
| <div class="block">Round robin a list of regions to a list of servers</div> |
| </li> |
| </ul> |
| <a name="getRegionAssignmentsByServer-java.util.Collection-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getRegionAssignmentsByServer</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.544">getRegionAssignmentsByServer</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</pre> |
| </li> |
| </ul> |
| <a name="toEnsumbleTableLoad-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>toEnsumbleTableLoad</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.549">toEnsumbleTableLoad</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> LoadOfAllTable)</pre> |
| </li> |
| </ul> |
| <a name="balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>balanceTable</h4> |
| <pre>protected abstract <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.574">balanceTable</a>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> tableName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> loadOfOneTable)</pre> |
| <div class="block">Perform the major balance operation for table, all sub classes should override this method. |
| <p/> |
| Will be invoked by <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceCluster-java.util.Map-"><code>balanceCluster(Map)</code></a>. If |
| <a href="../../../../../../org/apache/hadoop/hbase/HConstants.html#HBASE_MASTER_LOADBALANCE_BYTABLE"><code>HConstants.HBASE_MASTER_LOADBALANCE_BYTABLE</code></a> is enabled, we will call this method |
| multiple times, one table a time, where we will only pass in the regions for a single table |
| each time. If not, we will pass in all the regions at once, and the <code>tableName</code> will be |
| <a href="../../../../../../org/apache/hadoop/hbase/HConstants.html#ENSEMBLE_TABLE_NAME"><code>HConstants.ENSEMBLE_TABLE_NAME</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tableName</code> - the table to be balanced</dd> |
| <dd><code>loadOfOneTable</code> - region load of servers for the specific one table</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>List of plans</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="preBalanceCluster-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>preBalanceCluster</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.582">preBalanceCluster</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> loadOfAllTable)</pre> |
| <div class="block">Called before actually executing balanceCluster. The sub classes could override this method to |
| do some initialization work.</div> |
| </li> |
| </ul> |
| <a name="balanceCluster-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>balanceCluster</h4> |
| <pre>public final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.598">balanceCluster</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>>> loadOfAllTable)</pre> |
| <div class="block">Perform the major balance operation for cluster, will invoke |
| <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"><code>balanceTable(TableName, Map)</code></a> to do actual balance. |
| <p/> |
| THIs method is marked as final which means you should not override this method. See the javadoc |
| for <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"><code>balanceTable(TableName, Map)</code></a> for more details.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#balanceCluster-java.util.Map-">balanceCluster</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>loadOfAllTable</code> - region load of servers for all table</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a list of regions to be moved, including source and destination, or null if cluster is |
| already balanced</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"><code>balanceTable(TableName, Map)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="onConfigurationChange-org.apache.hadoop.conf.Configuration-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>onConfigurationChange</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.617">onConfigurationChange</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#onConfigurationChange-org.apache.hadoop.conf.Configuration-">LoadBalancer</a></code></span></div> |
| <div class="block">Notification that config has changed</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/conf/ConfigurationObserver.html#onConfigurationChange-org.apache.hadoop.conf.Configuration-">onConfigurationChange</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/conf/ConfigurationObserver.html" title="interface in org.apache.hadoop.hbase.conf">ConfigurationObserver</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#onConfigurationChange-org.apache.hadoop.conf.Configuration-">onConfigurationChange</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a name="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/BaseLoadBalancer.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CandidateGenerator.html" title="class in org.apache.hadoop.hbase.master.balancer"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" target="_top">Frames</a></li> |
| <li><a href="BaseLoadBalancer.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li><a href="#field.summary">Field</a> | </li> |
| <li><a href="#constructor.summary">Constr</a> | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li><a href="#field.detail">Field</a> | </li> |
| <li><a href="#constructor.detail">Constr</a> | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small>Copyright © 2007–2021 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </body> |
| </html> |
